/** @file
*
*  Copyright (c) 2011-2015, ARM Limited. All rights reserved.
*  Copyright (c) 2015-2016, Hisilicon Limited. All rights reserved.
*  Copyright (c) 2015-2016, Linaro Limited. All rights reserved.
*
*  SPDX-License-Identifier: BSD-2-Clause-Patent
*
*  Based on the files under ArmPlatformPkg/Library/PL011SerialPortLib/
**/

#ifndef __DW8250_SERIALPORTLIB_H__
#define __DW8250_SERIALPORTLIB_H__

#define SERIAL_0_BASE_ADR  (PcdGet64(PcdSerialRegisterBase))

#define UART_SEND_DELAY  (PcdGet32(PcdSerialPortSendDelay))
#define BAUDRATE         (PcdGet64(PcdUartDefaultBaudRate))

#define UART_THR_REG  (SERIAL_0_BASE_ADR + UART_THR)
#define UART_RBR_REG  (SERIAL_0_BASE_ADR + UART_RBR)
#define UART_DLL_REG  (SERIAL_0_BASE_ADR + UART_DLL)
#define UART_DLH_REG  (SERIAL_0_BASE_ADR + UART_DLH)
#define UART_IEL_REG  (SERIAL_0_BASE_ADR + UART_IEL)
#define UART_IIR_REG  (SERIAL_0_BASE_ADR + UART_IIR)
#define UART_FCR_REG  (SERIAL_0_BASE_ADR + UART_FCR)
#define UART_LCR_REG  (SERIAL_0_BASE_ADR + UART_LCR)
#define UART_LSR_REG  (SERIAL_0_BASE_ADR + UART_LSR)
#define UART_USR_REG  (SERIAL_0_BASE_ADR + UART_USR)

#define UART_RBR  0x00
#define UART_THR  0x00
#define UART_DLL  0x00
#define UART_DLH  0x04
#define UART_IEL  0x04
#define UART_IIR  0x08
#define UART_FCR  0x08
#define UART_LCR  0x0C
#define UART_MCR  0x10
#define UART_LSR  0x14
#define UART_USR  0x7C

/* register definitions */

#define UART_FCR_EN         0x01
#define UART_FCR_RXCLR      0x02
#define UART_FCR_TXCLR      0x04
#define UART_FCR_CLEARFIFO  0x00
#define UART_FCR_RXL1       0x00
#define UART_FCR_RXL4       0x40
#define UART_FCR_RXL8       0x80
#define UART_FCR_RXL14      0xc0
#define UART_FCR_TXL0       0x00
#define UART_FCR_TXL4       0x20
#define UART_FCR_TXL8       0x30
#define UART_FCR_TXL14      0x10

/*LCR Name: Line Control Register fields*/
#define UART_LCR_DLAB  0x80
#define UART_LCR_EPS   0x10
#define UART_LCR_PEN   0x08
#define UART_LCR_STOP  0x04
#define UART_LCR_DLS8  0x03
#define UART_LCR_DLS7  0x02
#define UART_LCR_DLS6  0x01
#define UART_LCR_DLS5  0x00

#define UART_DLH_AND_DLL_WIDTH  0xFF

#define UART_IER_PTIME  0x80
#define UART_IER_ELSI   0x04
#define UART_IER_ETBEI  0x02
#define UART_IER_ERBFI  0x01

#define UART_IIR_FIFOSE  0xC0

#define UART_IIR_InterruptID  0x01
#define UART_IIR_INTIDTE      0x02
#define UART_IIR_INTIDRA      0x04
#define UART_IIR_INTIDRLS     0x06
#define UART_IIR_INTMASK      0x0f
#define UART_IIR_RDA          0x04
#define UART_IIR_TE           0x02

#define UART_LSR_TEMT  0x40
#define UART_LSR_THRE  0x20
#define UART_LSR_BI    0x10
#define UART_LSR_FE    0x08
#define UART_LSR_PE    0x04
#define UART_LSR_R     0x02
#define UART_LSR_DR    0x01

#define UART_USR_BUSY  0x01

#define FIFO_MAXSIZE  32

extern UINT8
SerialPortReadChar (
  VOID
  );

extern VOID
SerialPortWriteChar (
  UINT8  scShowChar
  );

#endif
